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Complex relationship and multi-level massive of spatial data need to be expressed in forms of better visual conception as new cartographic visualization methods show up. Definition of traditional thematic maps is so strict that limits the expressions, so a new confine of definition that we call it “geo-infographics” is defined. It includes both traditional thematic mapping and new expressions referring...
Due to the development of Internet of Things, which is closely related to a series of geographical questions, this paper explore such new phenomenon of Human Geography, especially the change from Internet era to Internet of Things era, and try to construct the framework of Internet of Things Geography, including: 1. Internet of Things break through time and space isolation between geographical space...
It is a critical challenge to the development of resources-based cities in many countries-How to resolve the problem of circulating situation for resources as developing-prosperous-exhausted-declined. In the case of mountain resource-based city Panzhihua, the paper puts forward two methods that the construction of digital SPI mode in Panzhihua and the construction of intelligence city to accelerate...
The features of mass spatial data and the limit of Internet bandwidth are key issues which restrict the WebGIS application performance. How to implement efficient vector data compression is important during the stage of data transmission. To get high compression ratio, we propose one multilevel vector data compression method which combine lossy compression and lossless compression technology. According...
This paper presents a regional citrus pest forecasting and decision-making system established on Internet supported by Ontology, Expert System (ES), and Geographic Information Systems (GIS). The system adopted ontology to represent knowledge. The terrain data, weather data and pests damage information were interpreted with and merged into ontology. The expert system made a prediction about pests occurrence...
The expression of electronic map was analyzed in the traditional Internet GIS and the relevant information about GIS integrated with Flex-based RIA (Rich Internet Application) was described in this paper. In addition, a new expression way of GIS electronic map was discussed too. The page mode of book was applied to Internet GIS to show the current multi-source and multi-type of electronic map. The...
With the rapid development of Chinese urbanization and industrialization, it has become an increasingly pressing problem to alleviate the situation of blackening and stink of the urban rivers. In the requirement of controlling black-odor river, this research was operated with the support of the National Key Water Program during the 11th Five-Year Plan Period. In this study, the commonness technical...
The Web Content Aggregation Service based on Digital Earth geospatial framework is combined form of existing web content aggregation service and corresponding space position information retrieval. The customized service comprises three stages: web content acquisition, aggregation and distribution stage. This paper focuses on the first stage where the required content is fetched from multiple web sites...
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